Machine for polishing metallic bodies.



C. MEDGYES.

MACHINE FOR PoLlsHlNG METALLIC BoDlEs.

APPLICATION FILED AUG.4| 1914.

Patented May 1, 1917.

;ma ss rama einen.

CHARLES MEDGYES, or BUDAPEST, HUNGARY, AssIGn-on To WENGER & co., or' nELEMoN'r, swIrzEnLAND, A. FIRM.

MACHINE roa roLrsHme 'METALLIC Bonrns.

To aZZ 'wlwm it may cooem:

Be it known that I, CHARLES MEDGYES, Ph. D., a subject of the King of Hungary, residingat 7 8 Vczi-krut, Budapest, Hungary, :have invented a new and useful Improvement in Machines for Polishing Metallic Bodies; and I do hereby declare the fol- 'lowing to be a full, clearyand eXactv description of the' same.

' vrll`his invention relates to a device for polishing various articles, especially-metal goods by means of loose small polishing bodies,

' as highly lpolished small steel balls and nails.

It is not new to make containersout of yielding material (such as sacks) for use as shakingv containers for the polishing bodies used for the polishing. It is also known to polish metal Ware especially silver articles in rotary drums,' which are more than half filled with the polishing bodies; also to effect the polishing in. fixed receptacles in such way that the polishing material is constantly -removed at one part of the receptacle and returned again to the receptacle in a circuit. When polishing in drums there is the disaidvantage that the drum for the time during the charge and discharge of the goods to be polished has to be stopped whereby especially with goods which can be polished quickly and easily, considerableloss of time occurs. With the open devices for polishing, there is however the disadvantage that the goods to be polished have the tendency to be shifted together with the polishing material in the direction of run of the latter; if however, s'vaid goods, -in order to prevent this shifting are held, only those surfaces of said goods are polished which face the direction of run of the polishing material.

The present invention attains the combination of the advantages of both devices by carrying out the polishing in an open receptacle into which is inserted the .lower part or bigh't of an endless circulating conveyer' belt` carrying the polishing material. It is evident that the direction of movement of the belt can be reversed from time to time..

In the accompanying drawings Figures 1 and 2 are Vertical sectional elevations in planes at right angles to each other showing diagrammatically one'example of a device according to the present invention; and

Figs. 3 and 4 are transverse sectional elevations illustrating other examples.

specification of Letters Patent.

Patented May 1, 1191?..

Application filed August 4, 1914. Serial No. 855,077.

F ig. 5 is a longitudinal sectional view of the form of invention ofFig. 4.

In the example shown in Figs. 1 and 2, 1 is a trough and 2 the conveyer belt which is driven by a roller 3. For removing the soap-water and thel lpolishing bodies the- Vvalve 4 -or the tightened door or flap 5 is used.

rI`he goods to be polished can be put'in i and out during working between the two hanging parts of' the belt, as indicated by the arrow 6. i The conveyer belt hangs freely with the polishing'imaterial within the trough, lonly the edges of the belt trailing against the front walls of the trough, in

'order to prevent the polishing material from falling' in-to the trough from the'polishing The conveyer belt may be yieldingly or .pivotally jointedand can be perforated or unperforated. It may also be provided with stifening cross Stays 8 or to be formed of jointed plates. It can be made of any suitable material, such as flat or corrugated steel bands, rubber with longitudinally extending steel bandsfor preventing stretchi ing, wire gage with cross ribs for preventing bulging, and the like.

In order to. prevent the escape of the polishing bodies :between the front walls and the conveyerbelt the edges of the belt may be guided in suitable slots in the front walls or there may be arranged within said front walls auxiliary walls 9 (Fig. 5) adapted to be adjusted parallel with said front walls e. by means of adjusting screws 10 and in accordance with the dis'tance of the edges of the belt; these auxiliary front walls may be yieldingly pressed against the edges of the belt by the insertion of springs 11.

Another means to prevent the escape of the polishing bodies consists in lateral parallel disks 12 of the diameter of the 'bight of the band, rotating on a shaft 13, and spaced in such a manner, that the edges of the band a run around the under edges of the disks.

In larger machines a number of rotatable supporting rollers may be arranged around the under side of the bght of 'the band, parallel With'the axis of the trough, to insure a broad formof the bght.l

I-Iaving now particularly .described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare'that what I claim is:

1. In a machine for polishing metallic bodies With small polishing bodies, as small steel balls, a single continuous conveyer belt forming with its U-shaped bght a receptacle adapted to receive the small polishing bodies, means to prevent the escape of these small polishing bodies out of the bght of the belt at thel edge thereof, means to drive continually said conveyer belt and an open receptacle receiving the bight 'of the conveyer belt.

2. In a machine for polishingv metallic bodies With small polishing bodies, as. small steel balls, a conveyer belt 'forming with its U-shaped bght a receptacle for the polishing bodies, means to prevent the escape of these small polishing bodies out of the bght of the belt, means to .drive continually said conveyer belt and trough with parallel front walls, receiving the bght of the conveyer belt, the breadth of which is equal to the distance of the front walls of said trough.

3. In a machine for polishing metallic bodies with small polishing bodies, as small steel balls, a conveyer belt forming with its U-shaped bght a receptacle for the polish- U-shaped bght a receptacle for the polishing bodies, means to prevent the escape of these small polishing bodies out of .the bght of the belt, means to drive'continually said conveyer. belt, an open receptacle receiving the bght of the conveyer belt and auxiliary front Walls Within said receptacle and means to press these auxiliary'V front Walls against the edges of the belt.v

5. In a machine for polishing metallic bodies with small polishing bodies, as small steel balls, a conveyer belt forming with its U- shaped bght a receptacle for the polishing bodies, means to prevent the escape of these small polishing-bodies out of'the bght of the belt, means to drive continually said conveyer belt, an open receptacle receiving the bght of the conveyer beltI and guiding. rollers leading the idle part of said belt below the working part of same.

In testimony whereof, I have signed my name to this specification in the presence of two subscribing wtnesses.v

3 CHARLES MEDGYES.

Witnesses:

EUGENE HARSANYI, SERENE WnIssHAUs. 

